Sunlight has all eight colours of the spectrum: red, orange, yellow, green, turquoise, blue, violet and magenta which has been researched to validate the importance of treating various diseases. For example, looking at blue light lowers blood pressure giving relief to the autonomic nervous system, while red light increases blood pressure.  

Colour therapy treats mental, emotional and physical problems restoring the person's health by using colour in different ways. Some therapists combine colour with reflexology, acupuncture and aromatherapy for best results.